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DRG Class 98.11

Type and origin
Power type	Steam
Rebuilder	RAW Weiden
Rebuild date	1934–1941
Number rebuilt	29

Specifications
Configuration:
• Whyte	2-8-0 T
• UIC	1′D h2t
• German	L 45.11
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	0,800 mm (2 ft 7+1⁄2 in)
Driver dia.	1,006 mm (3 ft 3+5⁄8 in)
Wheelbase:
• Axle spacing (Asymmetrical)	2,200 mm (7 ft 2+5⁄8 in) + 1,415 mm (4 ft 7+3⁄4 in) + 1,415 mm (4 ft 7+3⁄4 in) + 1,070 mm (3 ft 6+1⁄8 in) =
• Engine	6,100 mm (20 ft 1⁄8 in)
Length:
• Over headstocks	8,900 mm (29 ft 2+3⁄8 in)
• Over buffers	10,200 mm (33 ft 5+5⁄8 in)
Height	4,250 mm (13 ft 11+5⁄16 in)
Axle load	10.6 t (10.4 long tons; 11.7 short tons)
Adhesive weight	42.5 t (41.8 long tons; 46.8 short tons)
Empty weight	40.5 t (39.9 long tons; 44.6 short tons)
Service weight	50.7 t (49.9 long tons; 55.9 short tons)
Fuel type	Coal
Fuel capacity	2.6 t (2.6 long tons; 2.9 short tons)
Water cap.	5.1 m (1,120 imp gal; 1,350 US gal)
Firebox:
• Grate area	1.34 m (14.4 sq ft)
Boiler:
• Pitch	2,450 mm (8 ft 1⁄2 in)
• Tube plates	3,500 mm (11 ft 5+3⁄4 in)
• Small tubes	44.5 mm (1+3⁄4 in), 89 off
• Large tubes	133 mm (5+1⁄4 in), 12 off
Boiler pressure	12 kg/cm (11.8 bar; 171 psi)
Heating surface:
• Firebox	5.58 m (60.1 sq ft)
• Tubes	38.65 m (416.0 sq ft)
• Flues	16.50 m (177.6 sq ft)
• Total surface	61.00 m (656.6 sq ft)
Superheater:
• Heating area	18.93 m (203.8 sq ft)
Cylinders	Two
Cylinder size	508 mm × 460 mm (20 in × 18+1⁄8 in)
Loco brake	Compressed air brakes

Performance figures
Maximum speed	55 km/h (34 mph)
Power output	450 PS (331 kW; 444 hp)
Tractive effort	101 kN (22,700 lbf)

Career
Operators	Deutsche Reichsbahn-Gesellschaft Deutsche Reichsbahn Deutsche Bundesbahn
Numbers	98 1101 – 98 1129
Retired	1960–1968

The Class 98.11 steam locomotives of the Deutsche Reichsbahn were rebuilds of the Bavarian Class GtL 4/4 (DRG Class 98.8-9).

Because the riding qualities of the Class 98.10 were still not good enough to raise the speed of branch line (Lokalbahn) trains in Bavaria significantly, the Reichsbahn decided in 1934 to rebuild a Class GtL 4/4 engine (no. 98 906). Amongst other things, it was given an additional leading axle. As a result, the boiler and driver's cab had to be moved forward, which resulted in their having to be raised by 250 mm.

After trials with the locomotive had proved successful, it was decided to modify another 26 engines by 1939 and to allocate them to a new locomotive class. A further engine followed in each of the years 1940 and 1941. The rebuilds were given numbers 98 1101 - 98 1129.

The permitted top speed of the rebuilds could be raised to 55 km/h, compared with 40 km/h for the GtL 4/4 and 45 km/h for the Class 98.10.

All 29 locomotives survived the Second World War. Apart from 98 1108, which went to the DR in East Germany, they all went into the Deutsche Bundesbahn. The East German engine was retired in 1967; those in the West between 1960 and 1968.

References

Weisbrod, Manfred; Petznik, Wolfgang (1981). Dampflokomotiven deutscher Eisenbahnen, Baureihe 97–99 (EFA 1.4) (in German) (2nd ed.). Düsseldorf: Alba. pp. 67–70, 196. ISBN 3-87094-087-5.

v t e Classes of Bavarian locomotive and railcars
Early locomotives	Adler Jupiter and Juno Vesta and Venus Vulkan and Mars Merkur and Diana A I A II A III A IV A V B I B II B III B IV B V B V (artic) C I C II
Passenger and express train locomotives	B VI B VII B VIII B IX (old) B IX B X B XI Zw B XI Vbd C V AA I S 2/5 (Vauclain) S 2/5 S 2/6 S 3/5 N S 3/5 H S 3/6 P 2/4 P 3/5 N P 3/5 H
Goods train locomotives	C II C III C IV Zw C IV Vbd C VI E I E I (Vauclain) BB I G 3/4 N G 3/4 H G 4/5 N G 4/5 H G 5/5
Tank locomotives	D I D II D II (old) D III D IV D V D IX D XII Pt 2/3 Pt 2/4 N Pt 2/4 H Pt 2/5 N Pt 2/5H Pt 3/6 Gt 2×4/4 R 3/3 R 4/4
Branch line locomotives	D VI D VII D VIII D X D XI BB II PtL 2/2 (Maffei) PtL 2/2 (Krauss) PtL 3/3 PtL 3/4 PtzL 3/4 GtL 4/4 (GtL 4/5 - DRG 98.10) (GtL 4/5 - DRG 98.11)
Narrow gauge locomotives	LE Pts 3/4 Gts 4/4 Gts 2x3/3
Electric locomotives	ES 1 EP 1 EP 2 EP 3 EP 4 EP 5 EG 1 EG 2 EG 3 (EG 4) (EG 5)
Railbuses	Krauss railmotor MCi MBCi MCCi MBCL MPL D4ieIT (D4ieIT variant - DRG ET 85)
Bavarian Ostbahn locomotives	A 1 – A 12 A 13 – A 24 A 1 – A 2 B 1 – B 66 B 67 – B 78 B 79 – B 90 B 91 – B 96 B 97 – B 109 C 1 – C 12 C 13 – C 64 D 1 – D 12 D 13 – D 14
Royal Bavarian State Railways

v t e Classes of Deutsche Reichsbahn locomotive
Express train tender locomotives	01 01.10 02 02.1 03 03.10 04 05 06 19.10
Passenger train tender locomotives	23 24
Goods train tender locomotives	41 42 43 44 45 50 52 56.2–8
Express train tank locomotives	61
Passenger train tank locomotives	62 64 71.0
Goods train tank locomotives	80 81 84 85 86 87 89.0
Rack railway, branch line & narrow gauge locomotives	97.5 98.10 98.11 99.19 99.21 99.22 99.31 99.32 99.73–76
Electric locomotives	E 04 E 05 E 06.1 E 15 E 16 E 16.5 E 17 E 18 E 19 E 21 E 21.5 E 44 E 60 E 63 E 75 E 77 E 80 E 91 E 93 E 94 E 95 E 178 E 244
Diesel locomotives	V 3001 V 3201 V 3601 V 3602 V 3801 Kö I Köf II
Railbuses and multiple units	ET 25 ET 25.1 ET 31 ET 41 ET 51 ET 51.1 ET 55 ET 65 ET 82 ET 85 ET 87 ET 89 ET 91 SVT 125 SVT 137 ET 165 ET 166 ET 167 ET 168 ET 169 ET 171 SVT 877 Wismar
State railway locomotive lists	Baden Bavaria Mecklenburg Oldenburg Palatinate Prussia Saxony Württemberg

Categories:

See also

References